The original Convert-A-Ball Hitch System Products are of the highest quality, exceeding the requirements of the V-5 Federal rating in all categories. All Convert-A-Ball products are proudly made in the U.S.A.! All 1" shanks are rated 10,000 lbs. 2-5/16" Replacement Ball will not fit on a 3/4" Shank. These ratings are for total towed vehicle weight (TTVW). Do not exceed vehicle or hitch rating!